feat: add basic tests (#542)

* feat: add basic tests

.github/workflows/ci.yml

@@ -0,0 +1,42 @@
+name: CI
+
+on:
+  push:
+    branches: [main, develop]
+  pull_request:
+    branches: [main, develop]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Enable Corepack
+        run: corepack enable
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "22.x"
+          cache: "yarn"
+
+      - name: Install dependencies
+        run: yarn install
+
+      - name: Type check
+        run: yarn typecheck
+
+      - name: Run ESLint
+        run: yarn lint
+
+      - name: Run tests
+        run: yarn run test:ci
+
+      - name: Build
+        run: yarn build
+        env:
+          # Add any required environment variables for build
+          NEXT_PUBLIC_SITE_URL: https://pse.dev
+          NODE_ENV: test